Petunia Lightning Sky is the latest in novelty petunias that’s very hard to ignore. The speckled and starred yellow and red-velvet petals sparkle like a firework display. Each bloom is different, and the cooler days and nights bring out the markings. Like the other novelty petunias, the flowers are single, with compact, neat growth that suits smaller gardens, and spill out of containers and hanging baskets. Plants can double-up as in indoor flower arrangement for a day or two before being planted outdoors. They like full winter sun, well-drained soil, regular watering and fertilizer once a month to ensure an endless supply of flowers. The other showy petunias in the novelty range are the blue-shaded Night Sky and Ink Splash, as well as the pink and white Baby Doll.